SOLUTION: A textbook store sold a combined total of
413
psychology and math textbooks in a week. The number of math textbooks sold was
55
less than the number of psychology textbooks
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-> SOLUTION: A textbook store sold a combined total of
413
psychology and math textbooks in a week. The number of math textbooks sold was
55
less than the number of psychology textbooks
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Question 971593: A textbook store sold a combined total of
413
psychology and math textbooks in a week. The number of math textbooks sold was
55
less than the number of psychology textbooks sold. How many textbooks of each type were sold?
You can put this solution on YOUR website! A textbook store sold a combined total of 413 psychology and math textbooks in a week.
The number of math textbooks sold was 55 less than the number of psychology textbooks sold.
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How many textbooks of each type were sold?
Equations:
p + m = 413
m = p-55
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Substitute for "m" and solve for "p"::
p + p-55 = 413
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2p = 468
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p = 234 (# of psychology books)
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m = p-55 = 179 (# of math books)
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Cheers,
Stan H.
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